Improvement in bases for artificial teeth



UNITED STATES PATENT EEICE.

JULIUS A. BIDWELL, OF STURGIS, MICHIGAN.

IMPROVEMENT IN BASES FOR ARTIFICIAL TEETH.

To all whom, it may concern:

Be it known that I, JULrUs A. BIDWELL, of Sturgis, in the county ot' St. Joseph and State of Michigan, have invented a new and useful Improvement in bases of Artificial Teeth,` by means of which improvement a more perfect and ready adaptation to the mouth is secured, and thereby the comfort of the wearer promoted.

The nature otl my invention consists in providing the bases ot' artificial teeth with ilexible airchambers, secured nearly upon the central portion ot' the base, and made more elastic or flexible than the base itself, whether made of the same or different materials.

To enable others skilled in the art to make and use my inventioinl will proceed to de scribe its construction and advantages.

I construct the base to which the artificial teeth are secured ot' any of the known forms or materials. I prefer to construetitof vulcanized caoutchouc, though I do not wish to be confined to any specific material.

In the drawings, A represents the base to which the teeth are attached; B the central airchamber, made more iiexibie or elastic than the base A, and perfectly united with it. The advantage ot' this construction is obvious. It is well known in practice that it is dicult to exclude the atmosphere from between thereof of the mouth and the upper portion of the base A, by exhausting it with the tongue. Now, by my invention the manipulation of the thumb or finger may be more advantageously employed, and thus a better vacuum secured, as the base by this means adheres with more tenacity (the atmospheric pressure being greater) to the roof of the mouth. At the same time the solidity and strength ofthe base itself remains unimpaired.

Y'Vhat I claim as new, and desire to secure by Letters Patent, is-

The employment, upon thebases of artitiical teeth, (being; a part ofthe base itself,) of a flexible air-chamber or intervening medium for the purposes and uses expressed, and in the manner substantially as set forth.

IsAAo D. TOLL, F. S. PACKARD. 

